Fluid controlling device



May 31, 1932. l J. HUME 1,860,417

FLUID CONTROLLING DEVICE Filed Dec. 15, 1928 E 6 l7 0 |NVENTOR UCHN HU ME ATTOR Y Patented Ma i .1932

"UNITED; STATES JOHN HUME, or nous'roiv; TExAsAssIenoR TO THEWESTINGHOUS AIR BRAKE, M

PANY, OF WILME RDING, PENNSYLVANIA, A CORPORATION OF BENNSYLVANIA FLUIDCONTROLLING m ivrcn Applicationfiled December 15,192sss a'1 noiezaecc,

This invention relates to fluid pressure brakes, and more particularlytomeans for.

testing the extent of leakage of fluidunder pressure from the brake pipeof the fluid pressure. brake system.

The principal object of my invention isto provide means associated withthe fluid pres-.

sure brake system. whereby the engineer .may at any timetest the extentof leakage of fluid under pressure from the brake pipe. 7

If the engineer finds that the leakage is excessive, he can report thesame when the 1 train arrives at a station or other terminal, so thatthe excessive leakage may bestopped leaks located.

afterthe train has been inspected and the In the accompanying drawings,Fig. 1 is a diagrammatic view of a portion of the 1000- motive fluidpressure brakeequipment, showing my invention embodied therein; Fig. 2 aplan view of the leakage testing device; Fig. 3 a section on the line3-3 of Fig. 2; andFig. 4 a plan view of the rotary valve of the leakagetesting device.

The fluid pressure brake apparatus shown 1n Fig. 1 comprises the usualengineers brake valve device 1, a main reservolr 2, connected by pipe 3with the. brake valve device, and

the usual feed valve device 4, adapted to sup-- ply fluid at a reducedpressure throughpipe ,5 to the brake valve device 1,'the brake valvedevice being adapted, in running position, to supply fluid underpressure fromithefeed valve device to the brake pipe, in the usualmanner. i

i Accordingto my invention, there is interposed in the pipe 5, aleakagetestingdevice comprising'a [casing 6 having a valve seat at its'upperface on which a rotary valve 7 seats. A cover plate 8 is secured to thecasingfi by bolts ,9 and has a valve chamber;1O which contains therotary valve 7. f

Extending through a central bore the a cover plate 8 is an operatingstem 11 having at its lower end a key section 12 adapted to engage in atransverse groove 13, formed on the upper face of the, rotary 'valve7..A

' handle 14 is secured jto'the outer end of the stem 11 for rotating'thestem and the rotary 7 valve. The main reservoir "pipe 3. is connected tothe valvei'ch'amber the rotary I valve 7 is provided with aseries "ofthrough ports 15 of different flow'areas and arranged to' "successivelyregister with a port opening 16in the valve seatwhich leads to a chamber17 in the casin valve side of pipe 5. p

one positionofthe -rotaryvalve" 7, a cavity 18 connects port 19with port16. The

port 19 leads to a chamber'20i'n the casing 6,- which is connected tothe feedvalve side of pipe 5, sothat when'therotary valve' is in theabove position, fiuid'funder pressure is supplied tromthe feed valvedevicelto the brake valvedevice. In the other positions of the rotaryvalve, thefeed" valve connection'iscut oflI'. v

A flange 21, associated with the sleeve portion 22 of the'cover plate 8,is providedwith a plurality of notches 22 corresponding with thedifferent positions of the rotary valve 7 1 and adapted to'be engaged'bya'spring pressed carried, provided the leakage fromthe brake,

l g 6' connectedrto the brake pipe is not excessive or above apredetermined amount. For example, the smallest port may be arranged tosupplyfluid for a 10 car train, and the next succeeding port for a 20cartrain and so on. I

In operation, the handle 14 of the testing device is normally set in theposition shown in the drawing, so that cavity 18 connects ports 19 and16 and consequently, fluidunder;

pressure is supplied from the feed valve de-- vice 4 to the brake valvedevice and with the brake-valve vdevice in running position, fluid underpressure is supplied by'the feed valve device to the usualbrake pipe tomaintain the pressure therein at the standard pressure carriedf, I

-' If the engineer wishes to test the train for brake pipe leakage,-heturnsthe handle 14 to aposition corresponding with the number of cars hehas in his train. He then watches the usual gage which indicated brakepipe pressure and if he finds that the brake pipe pressure is maintainedat the standard pres- 5 sure in this position, he will know that leakagefrom the brake ipe is not excessive. If the feed fifiuid un er pressurein this position is not suflicient to maintain the brake ipe pressure atthe standard carried, hewill w thahtherefiisI excessive leakage from thebrakmpipe, so that when thetrain arrives at the next stop, he can reportthe matter and have the leaks located and stopped.

While one illustrative embodiment of the invention has been described'indetail, it is intention to limit its scope to that em iment or otherwisethan by the terms. of: the appended claims. s

Having now describedmy, invention, what I olgim as new and desire tosecure by Let- 11m P te isz- 1 1. The combination with a fluid pressurebrake system of, a, train, said system having a brake pipe, mainreservoir and a feed valve. 5 device, of a valve device having a valveprovided with ports for supplying fluid under pressure from the mainreservoir to the brake pipe at difierent rates corresponding with thenumber of ears in the train and having a po 3.! sition forsuppl ingfluid under pressure from thefeed valve ev ceto the brake pipe.

'2. The combination with a fluid pressure brake systemof; a train, saidsystem having ebrakepipe, main reservoir and a feed valve device, oi avalve device having a rotary valve provided with a plurality of ports ofd fllmtflow areas adapted to supply fluid, unde r s u r h m in reservoirt n is e'pipe at difi'erent rates corresponding with the number of carsin the train and hWinge cavit for connecting the feed valve device tothe b rakepipe in one position of va ve: a I tes imeny he f Ih v ere ntoe 5, my hand, this 5 th day of December, 1928.

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